Can't make changes in MB Intelligent Tweaker in UEFI BIOS

[highstream]

GA-Z68X-UD3H-B3 (1.3), Win 8/7 x64.  Flashed UEFI last night from F12 and was surprised to discover that quite a few key items were highlighted under M.I.T as if they could be changed, but didn't respond to either Enter or a mouse click. These are items, such as memory multiplier and CPU Clock Ratio, that were readily adjustable before.  Here's a list of the highlighted ones that did not respond:

Advanced Frequency Settings:
   - CPU/PCIe Base Clock
   - Processor Graphics Clock
   - CPU Clock Ratio
   - System Memory Multiplier

Advanced Memory Settings
   - System Memory Multiplier

Advanced Voltage Settings
   - all 12 items

What might be blocking all these options in UEFI?  With F12, I settled on the defaults, except changing the memory multiplier from 1.60 to 1.88.  Btw, an updated manual for working with UEFI would be helpful. Thanks,

[absic]

Hi there,

welcome to the world of UEFI BIOS. I was caught out by this the first time I played with the new BIOS and discovered that you need to you the "Page up" & "Page Down" keys to adjust these settings once you have highlighted them.

As for a UEFI manual when I upgraded my Z68X-UD3P-B3 Mobo I downloaded the user manual for a Z77 Mobo and used that to get a grip on how things worked.

[highstream]

Thanks!  Who would have known about Page Up/Down?  Got the Z77 manual and will look through it.  Now, you wouldn't happen to have any ideas about the Marvell/Apache question I posed, would you?

[absic]

Sorry, I don't know the answer to that one. I tend to run Microsoft Security Essentials, rather than a 3rd party security program so I have never come across this.

For those wondering what we are talking about check here: http://forum.giga-byte.co.uk/index.php/topic,11205.0.html

[highstream]

Is Marvell Storage Utility a security program?  I don't think so.  It's one of the drivers showing for the Z68 board, while Apache is an HTTP Server Project that the driver installs.  Guess you know even less than me.

[absic]

I was referring to the Secunia PSI program which gave you the warning and is probably why I haven't come across this particular issue before.